47results about How to "Good shielding protection" patented technology

A topical application comprises cultured pearl powder of particle size ranging between 0.4 μm and 1 μm ground by an ultrasonic gas jet mill, and purified water suspending the cultured pearl powder.

The invention provides a compound chromate-free passivator capable of forming films rapidly. The compound chromate-free passivator comprises water-dilutable resin, silicon dioxide, a surfactant, a corrosion inhibitor, an accelerant and water. The chromate-free passivator provided by the invention does not contain poisonous and harmful ingredients such as heavy metal, sodium nitrite, phosphoric acid and the like, is environment-friendly, pollution-free and clean in production, and is close to passivation effect of hexavalent chromate in the aspect of comprehensive performance such as corrosionresistance and reprocessing; and the passivator sufficiently utilizes the diversity of organic high-molecular polymers and the rapid forming characteristic of inorganic salt, so that a high-performance resin and zirconium-based oxide layer compound coating can be provided for metal surfaces, compound passivation film provides a double protection function for protection of metal surfaces, and the organic coating has a clear advantage of delaying initial-stage corrosion on the metal surfaces, so as to ensure that the metal surfaces have excellent corrosion resistance and then the adhesive forceof coating is improved.

The invention relates to a plate with an ionizing ray (X-ray or gamma-ray) radiation protecting function and provides an ionizing ray shielding protective plate. The protective plate comprises the following raw materials in percentage by weight: 7-10 percent of raw wood pulp material, 10-15 percent of cement, 2-5 percent of rare earth composite powder, 60-80 percent of barium sulfate powder and asmall amount of auxiliary materials (mica, aedelforsite and expanded perlite). A manufacturing method of the protective plate comprises the following steps of: preparing raw wood pulp; pulping by mixing; sizing; preparing a molded blank; reshaping and stacking; preparing a molded plate; initially curing; performing steam curing; drying the plate; performing post processing; and the like. The ionizing ray shielding protective plate has dual X-ray and gamma-ray protecting effects, high intensity and light weight, and can be used for replacing a lead plate. The raw materials used in the manufacturing method are sufficient, the foaming procedure in the production process is eliminated, the equipment and the process are simple, and the manufacturing cost is low.

The invention relates to an anti-corrosion treatment method for exotic metal structures of maglev steel rails. The anti-corrosion treatment method includes steps of cleaning attachments, rust and oxide layers on the surfaces of aluminum alloy profiles and F-shaped steel guide rails; coating aluminum-rich coatings on the surfaces, contacting with the F-shaped steel guide rails, of the aluminum alloy profiles, and coating zinc-based plated coatings on the surfaces, contacting with the aluminum alloy profiles, of the F-shaped steel guide rails; and fitting the aluminum alloy profiles and the F-shaped steel guide rails with H-shaped steel rail sleepers according to the prior art after coatings are coated. Two protective layers of the aluminum-rich coating layer/zinc-based plated coating layer are formed between the aluminum alloy profile and the F-shaped steel guide rails, so that galvanic corrosion between the aluminum alloy profiles and the F-shaped steel guide rails are prevented, corrosion resistance of the maglev steel rails is improved, and the service life is prolonged.

The invention discloses a roadway or tunnel surrounding rock shielding protection structure and method. Under the action of ground pressure, bare surrounding rocks are formed after a roadway or tunnelis excavated and formed. The invention provides a multilayer combined shielding protection structure and method; a special shielding layer is constructed by injecting a special shielding material; afine bamboo concrete layer is constructed by pouring fine bamboo concrete; an energy absorption controller is provided to build an energy absorption control layer and a bracket which is shaped like aChinese character ''ya'' and is constructed by a steel pipe support is erected; the roadway or tunnel surrounding rock shielding protection structure jointly formed by the multilayer protection structures plays a good supporting protection effect on the bare roadway or tunnel surrounding rocks, the damage of the impact stress wave can be effectively shielded, a remarkable toughness energy absorption effect on the impact energy is achieved, the residual energy can be further absorbed through the energy absorption controller and the bracket which is shaped like the Chinese character ''ya'', theimpact failure of the roadway or tunnel is avoided, and the safety of the roadway or tunnel can be effectively protected.

The invention discloses a coal mine heading face boring exploration protection device comprising a substrate and self-locking universal wheels arranged on two sides of the substrate bottom; the substrate is provided with a first vacuum tank and second vacuum tanks; a work platform is arranged on top of a vertical rod; a drilling machine body is arranged on top of the work platform; a position, close to a drill bit, on one side of the work platform is provided with a cover plate; a guide tube connected with the first vacuum tank is arranged on the bottom of the cover plate, and provided with asolenoid valve; the first vacuum tank and the second vacuum tank and the second vacuum tanks are respectively connected via breather pipes; a dust filter net is arranged in middle position in the first vacuum tank. The protection device can provide good protection and shield effects, can fast absorb and gather leaking gas and dusts formed in boring into the vacuum tanks, thus reducing gas and dustleakage, recovering gas resources, and reducing dust damages.

The invention provides a preparation method for a normal-temperature-cured polytetrafluoroethylene-modified high-solid-content automobile varnish. The preparation method is characterized by comprising a step of mixing main paint, a curing agent and a diluent according to a mass ratio of 100: 50: (10-15), wherein the main paint is prepared by mixing 40 to 59 parts of mixing monomer, 1 to 5 parts of an initiator and 40 to 60 parts of a mixed solvent under stirring in the presence of nitrogen and then adding 3 to 5 parts of modified transparent oily polytetrafluoroethylene resin drop by drop; the curing agent is prepared by mixing 50 to 60 parts of polyisocyanate, 30 to 40 parts of butyl acetate and 10 to 20 parts of propylene glycol methyl ether acetate; and the diluent is prepared by mixing 50 to 60 parts of butyl acetate with 40 to 50 parts of propylene glycol methyl ether acetate. According to the invention, the liquid polytetrafluoroethylene resin prepared on the basis of independent research and development is added into hydroxyl-acrylic resin, so the prepared automobile varnish has the excellent properties of super self-cleanness, high hardness, super smoothness, weatherability, etc.

The invention discloses an epoxy resin anticorrosive coating comprising the following components in parts by weight: 100 parts of a waterborne epoxy emulsion, 20-30 parts of nano CeO2, 12-19 parts ofzinc phosphate, 15-18 parts of cellulose acetate butyrate, 4-8 parts of sodium polyacrylate, 3-5 parts of sodium silicate, 1-2 parts of a silane coupling agent, 3-6 parts of a curing agent, 2-5 partsof an antisettling agent, 1-2 parts of a plasticizer, 6-8 parts of an antifouling agent, 7-9 parts of a filler, 1-3 parts of a defoaming agent, 12-25 parts of phenolic resin, and 30-40 parts of water.The invention also discloses a preparation method of the epoxy resin anticorrosive coating. The epoxy resin anticorrosive coating has excellent anticorrosive performance, good film forming property and high adhesion force, and can provide effective anticorrosive protection for metals.

The invention discloses a silicone rubber composition. The silicone rubber composition is prepared from the following components in parts by weight: 100 parts of methyl vinyl silicone rubber; 25 to 60 parts of reinforcement filler; 100 to 400 parts of X-ray absorbent; 2 to 20 parts of processing agent; and 0.2 to 3 parts of cross-linking agent. The silicone rubber composition adopts the methyl vinyl silicone rubber as a base material to be combined with the reinforcement filler, the X-ray absorbent, the processing agent and the cross-linking agent to generate the silicone rubber composition, after being cured, the silicone rubber composition has good shielding and protective effect for X-rays, also has good weather resistance, mechanical strength and toughness, is conveniently made into various types of protective products and is suitable for being popularized to use.

The invention relates to a signal line transmission member, more concretely, relates to an integrated shield plug used in signal line insert element. It is comprised by a front shell, a functional part and a back shell, wherein the port of the front shell is rectangleladder-shaped, and one end of the functional part is connected to the front shell, and another end is connected to the back shell which is of integrated structure like rectangle funnel, an upper port is connected to the functional part, and the lower funnel mouth is a circular port for coating signal cable, and plural kinds of concave grooves are disposed on the body of the back shell. The invention has novel design, and its back shell integrated structure with concave grooves is simple, practical and beautiful, and has good shield effect on signal transmission, and has simple processing technology, low cost, high quality, and is easy for assembly and is adapted to computer signal line.

The invention discloses an electrical connector, comprising: a body, wherein the body comprises a plastic module and two substrates, the plastic module is located between the two substrates, the substrates are provided with at least one first grounding terminal hole, a metal layer is disposed in the first grounding terminal hole, the plastic module is provided with a receiving slot corresponding to the first grounding terminal hole, at least one first grounding terminal is received in the first grounding terminal hole and the receiving slot, the body is further provided with at least one second grounding terminal hole that receives at least one second grounding terminal, and the substrates are provided with at least one grounding layer that is connected to the metal layer and exposed to the first grounding terminal hole. Adding the second grounding terminal to the body effectively enhances the shielding effect on interference signals, and the composite structure of the two substrates sandwiching the plastic module provides a good shielding effect on the conductive terminals received therein.

The invention relates to an elevator cable butt joint structure, which comprises: a first elevator cable and a second elevator cable, wherein each of the first elevator cable and the second elevator cable comprises an insulating sheath, a left conducting wire group, a middle conducting wire group, a right conducting wire group, a left steel wire and a right steel wire; and a butt joint assembly, wherein the butt joint assembly comprises a limiting seat, a limiting cover, a first locking screw, a second locking screw, a third locking screw, a fourth locking screw and a plurality of fixing screws, a left containing groove, a middle containing groove, a right containing groove, a left positioning groove, a right positioning groove and other grooves are formed in the limiting seat, and a leftpressing protruding part and a right pressing protruding part are arranged on the bottom face of the limiting cover. According to the butt joint assembly, the two elevator cables can be firmly connected together, so that the situation that the elevator cables are broken can be avoided, the probability of safety accidents of an elevator is reduced, the safety of passengers can be well guaranteed, the assembling mode is very simple, and connection of the elevator cables can be rapidly achieved.

The invention provides a pair of glasses having protection lens, which is characterized in that the protection lens can be arranged over the lens of the glasses. The protection lens realizes rainwater shielding effect to the lens of the glasses, and visual line interference due to rainwater can be avoided when the glasses are worn outdoor.

The invention provides an integrated shield and protection sensor which comprises a sensing probe, a cable portion and a sealing connection flange. A flange base of the sealing connection flange is fixedly mounted on a box, the sensing probe is arranged in the box, a sealing sleeve is detachably fixed on a base plate of the flange base, the outer end of the sealing sleeve is connected with a pressing cover in a threaded manner, the sealing sleeve is embedded between the pressing cover and the flange base, the cable portion penetrates the box, the flange base, a sealing rubber sleeve and a cable hole of the pressing cover, and the sealing sleeve is extruded by screwing the pressing cover and can function in sealing. By the aid of the technical scheme, a signal transmission cable connector joint connecting structure is abandoned, and a transmission cable has continuous and complete shield and protection functions and can reliably work in working environments with strong vibration and strong interference.

An alarm annuciator with lighting function consists of alarm including transducer, stepped alarm circuit, display, infrared connector and horn; metal instrument box for holding alarm and lithium battery as its panel with air vent, indicator, infrared connector, hole of alarm sound, its back with jack catch, its top with cable interface. The stepped alarm circuit is composed of power interface, fuse tube, transformer, infrared receiving circuit, monolithic computer, stabilized voltage circuit, methane sensor circuit, amplifier, display driving and alarm output circuit.

The invention discloses an optical fiber sensor packaged by basalt fibers, and relates to the technical field of optical fiber sensors. Included are a body and a connector, mounting plates are arranged at the front end and the rear end outside the main body; a buffer block is mounted in the mounting plate, a connecting wire is arranged at one end of the exterior of the main body, a limiting deviceis mounted at the exterior of the connecting wire, a connecting sleeve is arranged at one end of the interior of the connecting wire, a built-in wire is mounted in the connecting sleeve, and a protective frame is arranged at the top of the main body. The sensor has the advantages that a clamping plate, a fixed spring and a positioning plate are arranged; a limiting assembly can be properly adjusted according to the size of a connecting pipe; the structure is simple, operation is convenient, the clamping plate is properly adjusted through the elasticity of the fixing spring, the clamping plateand the positioning plate can wrap the connecting pipe, the connecting stability degree between the connecting pipe and the main body is increased, and normal use of the optical fiber sensor is guaranteed.